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Author |
Subject |
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195
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Mon Oct 8 17:02:47 2018 |
DK | Target ladder photo from previous experiment | From Alex, attached. |
| Attachment 1: IMG_1274.jpg
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196
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Tue Oct 9 10:40:13 2018 |
DK | To-do Meeting Notes: July, August, September, October | Each month's notes are attached. Unfinished business naturally carries over to the next month.
This elog will be updated with new notes as necessary.
NB: These are the notes composed *prior* to the meeting, thus do not include any suggestions or corrections. |
| Attachment 1: 2018-07-todo.txt
|
ISOLDE 44Ti meeting notes
19 Jul 2018
==To be ordered==
*Entrance window foils, TBD
6um Ti from Goodfellow?
*Gas bottles at CERN - Helium and (likely) Argon.
ISOLDE might provide them, but they never did for N2 gas
Gas bottle will need a regulator (new or old one)
*Spanners to help repair water chiller leak.
We need the right imperial size (x2) for Swagelok.
Sizes? Email says 2x 9/16" but let's confirm
*High precision balance
No new updates. Do we really need it?
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
Responsible: Peter, Daid, CERN Vacuum Team ...
The old one had a leak, likely from the O-ring
(Automated fast-acting gate valve could be required)
At some point, we may have to decide w/o input
Path of least resistance: fix existing one
(The old manual one should be around Peter's office...what's the beam pipe size?)
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Teflon chamber feet stands
Responsible: Toby Fu
The original foot engraving diameter was too small, by mistake. The chamber could be shifted after alignment
But what are the design specifications?
EMAIL Mirco TO PICK THEM UP FOR US FROM ISOLDE
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Alpha scattering in SSDs is another option
*Photodiode degrader foil for isobaric check
Which Al foil(s) are prepared?
In Edinburgh or CERN?
What thickness is sufficient for 44Sc / 44Ti separation?
*Gas cell entrance window material / thickness
==Work==
*Decide beam energies
Responsible: Conor, Alex, Daid
1.2, 1.55, 1.88, 2.2 and 2.8 MeV/u were stated as available
*Model effect of beam spot size.
Responsible: Conor
~3 mm FWHM was achieved for 59Cu
*Gas cell
Responsible: Katie, Conor
Vacuum system is set up in Edinburgh, and He gas is available
He gas bottle needs a mounting support prior to use.
Everything is in Physics Stores
We can continue to investigate true leak rate, gas cell handling, assembly
Gas cell eventually needs to go to CERN.
Are we satisfied with the setup, or shall we get new parts?
(e.g. several new valves, ...)
*Chamber alignment
Responsible: Peter Black
Chamber is currently disconnected from the beam line.
Previously, we contacted the survey team to come assist.
*DAQ PC has any further issues to get on the network?
Responsible: Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
|
| Attachment 2: 2018-08-todo.txt
|
ISOLDE 44Ti meeting notes
28 Aug 2018
==To be ordered==
*Entrance window foils, TBD
3um Ti from Goodfellow? Is it light-tight?
*Gas bottles at CERN - Helium and (likely) Argon.
ISOLDE might provide them, but they never did for N2 gas
Gas bottle will need a regulator (new or old one)
*Spanners to help repair water chiller leak.
*FIRST CHECK VACUUM, CHILLER!*
NB: Might damage piping during re-assembly
We need the right imperial size (x2) for Swagelok.
Sizes? Email says 2x 9/16" but let's confirm
*High precision balance -- no need to buy
We are welcome to use the one in the chem lab on 2nd floor
Just wear a lab coat, and don't move other people's stuff
*PPE (Safety)
Boots and hardhats for new members
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
Responsible: Peter, Daid, Conor, Katie, ...
The old one had a leak, we don't know where
It's on top of Peter's PC in his office
Students can test in Edinburgh...once leak is identified:
Fix ourselves or send to Lesker?
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Take additional Pre-amp to CERN for Photodiode?
There are several in the Miniball cupboard...
*Teflon chamber feet stands
Responsible: Toby, Mirco, Daid
The original foot engraving diameter was too small, by mistake.
But what are the design specifications?
(Mirco picked these up for us, so they are in Germany?)
*Chamber stand wheel struts
Responsible: Peter, Daid, ...
Original ones are damaged at the ends, and also too long
Maria suggested 120 cm. We measured ~121 cm opening towards garage
To make less top-heavy, we can add a lower shelf and stack weight on it
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Total integrated current, with efficiency-calibrated Ge detector
Talk to Liam?
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Alpha scattering in SSDs is another option
*Photodiode degrader foil for isobaric check
10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
What thickness is sufficient for 44Sc / 44Ti separation?
(...or other suspected contamination...)
*Gas cell entrance window material / thickness
*Target ladder setup
How many targets can fit & what should they be?
3 mm collimator
Photodiodes (takes two slots)
Viewing screen (?)
1 mm collimator (?)
Blank target frame (?)
==Work==
*Determine beam energies
Responsible: Conor, Alex, Daid, Karl, Alberto, ...
1.2, 1.55, 1.88, 2.2 and 2.8 MeV/u were stated as available
Karl mentioned the possibility of a beam test.
Previous beam was 44Ti+13. 40Ar may be a good pilot?
*Model effect of beam spot size -- still relevant?
Responsible: Conor
~3 mm FWHM was achieved for 59Cu
*Gas cell
Responsible: Katie, Conor
Vacuum system is set up in Edinburgh, and He gas is available
He gas bottle needs regulator, that's it.
Gas cell eventually needs to go to CERN.
Are we satisfied with the setup, or shall we get new parts?
(e.g. several new valves, ...)
*Chamber alignment
Responsible: Peter Black
Chamber is currently disconnected from the beam line.
Previously, we contacted the survey team to come assist.
Alignment parts are all at CERN.
*DAQ PC has any further issues to get on the network?
Responsible: Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
|
| Attachment 3: 2018-09-todo.txt
|
ISOLDE 44Ti meeting notes
27 Sept 2018
==To be ordered==
*Entrance window foils, TBD
4um Ti from Goodfellow?
9, 12 um Al from Goodfellow?
(Some existing queries regarding Havar, et al.)
*Gas bottles at CERN - Helium and (likely) Argon.
ISOLDE might provide them, but they never did for N2 gas
Gas bottle will need a regulator (new or old one)
*Spanners to help repair water chiller leak.
*FIRST CHECK VACUUM, CHILLER!*
NB: Might damage piping during re-assembly
We need the right imperial size (x2) for Swagelok.
Sizes? Email says 2x 9/16" but let's confirm
*High precision balance
Daid still needs to show Katie and Conor where the room is and what to do.
We are welcome to use the one in the chem lab on 2nd floor
Just wear a lab coat, and don't move other people's stuff
*PPE (Safety)
Boots and hardhats for new members
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
Responsible: (Your name here)
Lesker quotes £123 for a repair kit. Check the elog. Does anyone volunteer?
New one has arrived - plan to leak check it
We need a KF-50 to ~ KF-25 (need to check) converter
*Photodiodes
Responsible: Daid
We have 3 at CERN, but no more in Edinburgh. Order more!
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Katie, Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Katie, Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Take additional Pre-amp to CERN for Photodiode?
There are several in the Miniball cupboard...
*Teflon chamber feet stands
Responsible: Toby, Daid
The original foot engraving diameter was too small, by mistake.
They are at Daid's desk, with tracings of the proper size.
*Chamber stand wheel struts
Responsible: Peter, Daid, Conor, Ruchi
Original ones are damaged at the ends, and also too long
Maria suggested 120 cm. We measured ~121 cm opening towards garage
To make less top-heavy, we can add a lower shelf and stack weight on it
Need a measurement of bolt spacing, Ruchi has a friend who can help us.
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Total integrated current, with efficiency-calibrated Ge detector
Talk to Liam?
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Daid should contact Paul Morrall
Alpha scattering in SSDs is most preferred.
*Photodiode degrader foil for isobaric check
10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
What thickness is sufficient for 44Sc / 44Ti separation?
(...or other suspected contamination...)
*Gas cell entrance window material / thickness
*Target ladder setup
How many targets can fit & what should they be?
3 mm collimator
Photodiodes (takes two slots)
Viewing screen (?)
1 mm collimator (?)
Blank target frame (?)
==Work==
*Determine beam energies
Responsible: Conor, Alex, Daid, Karl, Alberto, ...
1.2, 1.55, 1.88, 2.2 and 2.8 MeV/u were stated as available
Karl mentioned the possibility of a beam test.
Previous beam was 44Ti+13. 40Ar may be a good pilot?
WE AWAIT ALBERTO'S OPTICS CALCS & CRYO MODULE SCHEDULE.
*Model effect of beam spot size -- still relevant?
Responsible: Conor
~3 mm FWHM was achieved for 59Cu
*Gas cell
Responsible: Katie, Conor
Vacuum system is set up in Edinburgh, and He gas is available
Gas cell eventually needs to go to CERN.
New needle valves and some piping for the gas flow control.
*Chamber alignment
Responsible: Peter Black
Chamber is currently disconnected from the beam line.
Previously, we contacted the survey team to come assist.
Alignment parts are all at CERN.
*DAQ PC has any further issues to get on the network?
Responsible: Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
|
| Attachment 4: 2018-10-todo.txt
|
ISOLDE 44Ti meeting notes
09 Oct 2018
==To be ordered==
*Windows
Done
*Gas bottles at CERN - Helium and (likely) Argon.
Gas bottle will need a regulator (new or old one)
Emailed Karl to inquire. N2 necessary?
*Spanners to help repair water chiller leak.
Done
*PPE (Safety)
Boots and hardhats for new members
*New valves for gas flow system
*Gas cell stands for each gas cell
Order was submitted.
*Photodiodes
We have 3 at CERN, but no more in Edinburgh. Order more!
*Au foils
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
Responsible: (Your name here)
Lesker quotes £123 for a repair kit. Do we give up?
New one has arrived - plan to leak check it
Converter flange to check w/ He sniffer ordered, not arrived.
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Katie, Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Katie, Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Take additional Pre-amp to CERN for Photodiode?
There are several in the Miniball cupboard...
*Teflon chamber feet stands
Done
*Chamber stand wheel struts
Responsible: Peter, Daid, Conor, Ruchi
Original ones are damaged at the ends, and also too long
Maria suggested 120 cm. We measured ~121 cm opening towards garage
To make less top-heavy, we can add a lower shelf and stack weight on it
Need a measurement of bolt spacing, Ruchi has a friend who can help us.
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Total integrated current, with efficiency-calibrated Ge detector
Talk to Liam?
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Daid should contact Paul Morrall
Alpha scattering in SSDs is most preferred.
*Photodiode degrader foil for isobaric check
10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
What thickness is sufficient for 44Sc / 44Ti separation?
(...or other suspected contamination...)
Need to know the beam energies! This is quick work.
*Target ladder setup
How many targets can fit & what should they be?
3 mm collimator
Photodiodes (takes two slots)
Viewing screen (?)
1 mm collimator (?)
Blank target frame (?)
==Work==
*Gas cell
Responsible: Katie, Conor
Vacuum system is set up in Edinburgh, and He gas is available
Gas cell eventually needs to go to CERN.
New needle valves and some piping for the gas flow control.
Many windows, washers, etc are now ready to go!
**Window material / thickness
9, 12.5 um Al arrived.
3 um Ti arrived, some holes but maybe serviceable
6 um Ti had order mixup
We can get Havar in 2 weeks privately
*Chamber alignment
Responsible: Peter Black
Chamber is currently disconnected from the beam line.
Previously, we contacted the survey team to come assist.
Alignment parts are all at CERN.
*DAQ PC has any further issues to get on the network?
Responsible: Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
|
| Attachment 5: 2018-10-23-todo.txt
|
ISOLDE 44Ti meeting notes
23 Oct 2018
==To be ordered==
*Gas bottles at CERN - Helium and (likely) Argon.
Gas bottles for He, Ar can be supplied by CERN
N2 was also approved, but bear in mind volume required
*Spanners to help repair water chiller leak.
Ordered but did they arrive?
*PPE (Safety)
Boots and hardhats for new members
*New valves for gas flow system
*Gas cell stands for each gas cell
Order was submitted.
*Photodiodes
Order of 10 to arrive 7 Nov
*Au foils
Order placed with Paul at STFC
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
New one has arrived - plan to leak check it
Converter flange to check w/ He sniffer ordered arrived
Awaiting clamps that were ordererd
Repair kit was ordered.
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Katie, Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Katie, Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Take additional Pre-amp to CERN for Photodiode?
There are several in the Miniball cupboard...
*Teflon chamber feet stands - done
*Chamber stand wheel struts
Responsible: Peter, Daid
We have the necessary preparations, we await Peter.
We will use 118 cm since garage direction is ~121 cm
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Total integrated current, with efficiency-calibrated Ge detector
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Alpha scattering in SSDs is most preferred.
*Photodiode degrader foil for isobaric check
10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
What thickness is sufficient for 44Sc / 44Ti separation?
(...or other suspected contamination...)
Need to know the beam energies! This is quick work.
*Target ladder setup -- IMPORTANT
How many targets can fit & what should they be?
3 mm collimator
Photodiodes (takes two slots)
Viewing screen (?)
1 mm collimator (?)
Blank target frame (?)
==Work==
*Gas cell
Responsible: Katie, Conor
Gas cell eventually needs to go to CERN.
New needle valves and some piping for the gas flow control.
**Window material / thickness
9, 12.5 um Al
3, 6 um Ti
2.5 um Havar
3 um Ti, 12.5 um Al are installed with leak rates < 1 Torr/hr.
*Chamber alignment
Responsible: Peter Black
Previously, we contacted the survey team to come assist.
Alignment parts are all at CERN.
*DAQ PC has any further issues to get on the network?
Responsible: Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
|
| Attachment 6: 2018-10-31-todo.txt
|
ISOLDE 44Ti meeting notes
31 Oct 2018
==ENSAR2 status==
We have some information from people, but not enough.
When is the deadline?
==Meetings at CERN next week==
*Beam energy w/ Alberto
*Crane use w/ Olof
*Survey team w/ Peter Skypes
*RILIS people for laser ideas
*Find Liam if we need the alpha source
==To be ordered==
*PPE (Safety)
Boots and hardhats for new members
*New valves for gas flow system
Done. Peter will help weld it up later.
*Gas cell stands for each gas cell
Order is completed. We are awaiting M2 screws now.
*Photodiodes
Order of 10 to arrive 7 Nov
*Au foils
Paul at STFC confirmed the order.
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
New one has arrived - plan to leak check it
Awaiting clamps that were ordererd
Repair kit was ordered. Maybe Katie can enjoy this.
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Katie, Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Katie, Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Take additional Pre-amp to CERN for Photodiode?
There are several in the Miniball cupboard...
*Chamber stand wheel struts
These were mailed to CERN attn: Karl Johnston. He confirmed with DHL.
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Total integrated current, with efficiency-calibrated Ge detector
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Alpha scattering in SSDs is most preferred.
*Photodiode degrader foil for isobaric check
10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
What thickness is sufficient for 44Sc / 44Ti separation?
(...or other suspected contamination...)
Need to know the beam energies! This is quick work.
*Target ladder setup -- IMPORTANT
Peter has made a jig for us, it looks promising.
How many targets can fit & what should they be?
3 mm collimator
Photodiodes (takes two slots)
Viewing screen (?)
1 mm collimator (?)
Blank target frame (?)
==Work==
*Gas cell
Responsible: Katie, Conor
Gas cell eventually needs to go to CERN.
**Window material / thickness
9, 12.5 um Al
3, 6 um Ti
2.5 um Havar
3 um Ti, 12.5 um Al are installed with leak rates < 1 Torr/hr.
*Chamber alignment
Responsible: Peter Black
Previously, we contacted the survey team to come assist.
We'll have a chat next week. Peter can join w/ Skype.
Alignment parts are all at CERN, _except a gas cell prism holder_
*DAQ PC has any further issues to get on the network?
Responsible: Daid, Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
*Cobbling things together at CERN next week
Responsible: Daid, Conor, ...
What should we take?
Rainbows and unicorns.
What should we bring back?
Some chocolate, maybe
==Simulation code==
Responsible: Daid, Alex, Conor, ...
Sounds like some people are reinventing the wheel in Canada.
What's the best way to collaborate and share? Probably git.
|
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197
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Tue Oct 9 14:25:54 2018 |
DK | Au foil request to STFC | http://npg.dl.ac.uk/TargetRequests/
https://www.technologysi.stfc.ac.uk/Pages/Target-frames.aspx
The standard frame is NSF CP type 3
Asked for 5x 100 ug/cm^2 Au. |
| Attachment 1: NPG_-_Online_Target_Request.pdf
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198
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Wed Oct 10 10:57:33 2018 |
DK | Chamber wheel bolt spacing | From Ruchi's friend Rob. |
| Attachment 1: WhatsApp_Image_2018-10-10_at_09.14.43.jpeg
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Wed Oct 31 14:50:36 2018 |
DK | Strut shipping info | http://www.dhl.com/en/express/tracking.html?AWB=1647723055&brand=DHL |
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Wed Oct 31 16:01:33 2018 |
DK | Measuring foil thickness | A couple scans from my notes which may be useful.
One discusses alpha energy loss in nominal kitchen foil (~12 um) and also introduces my technique to calibrate a thin (~20 um) SSD. Sorry I forget which student's thesis it's from, either Sakaguchi of CNS Tokyo or perhaps Dahee Kim of
Ewha. They both did alpha measurements in 2015 as memory serves. It shows we could measure the thickness of the 12.5 um Al foil from Goodfellow with a standard source.
The second is just an email to a colleague about how I went about measuring some foils by weight. In that case, I want to get an idea on "how much aluminium might be evaporated on the mylar" and I got, I believe, a pretty sensible
answer. Of course, I *assumed* that the mylar was the nominal value. |
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Fri Nov 2 17:01:16 2018 |
DK | Inventory going to CERN by easyJet | Conor will take:
==Black clicker case==
Foam packed, gas cell "b" with 12.5 um Al entrance window.
Target ladder with broken gas cell installed.
Daid will take:
==Backpack etc==
1 box with 4 quick-release gas tube hoses.
One bag with 6 teflon foot supports.
One small bag with gain screwdriver, 2 LEMO barrels, a bag of M2 screws from Japan, 1 gas cell saddle.
Gas cell feedthrogh, in bubble wrap
Gas cell vacuum bypass, including analog gauge dial.
One bag with extra O-rings and the acrylic window for the gas feedthrough itself
Silena Quad Bias Supply 7710
4 imperial spanners for Swagelok
2 Notebooks (common one and daid's one) |
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Tue Sep 19 14:54:47 2017 |
Claudia, Toby | Setup Photos | |
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Tue Mar 14 10:57:20 2017 |
Claudia | Meeting Edinburgh 14 March 10 am 2017 | 1) DAQ
We have 192 channels to DAQ working. Mirco will test the silicon detectors with an alpha source in the next 2 weeks.
2) Vacuum
In the moment we reach 6E-6. There are still 2 tiny leaks. There will be an extra turbo for the upstream beam line which should improve the vacuum for ISOLDE purposes.
We need to check how fast we can pump down as might need to open the chamber between tuning and beam time (detectors need to be protected from tune beam).
3) Alignment
Alignment of the sample positions can be done here (Mirco/Peter). Claudia will contact Karl about a survey team for alignment at ISOLDE. Then we can talk to them directly.
4) Shipping
We aim to ship the setup to CERN by the end of March. We will try to go over to CERN for initial setup middle of April (to be confirmed with Karl)
5) Equipment needed from CERN
Claudia will ask Karl about availability of a CAMAC crate and 2 NIM bins.
6) Safety
Peter will order safety boots and hard hats.
Those who do not have ISOLDE access need to attend the ISOLDE radiation protection course.
7) Availability for Preparations
Tom not here: 25 March - 3 April, 25 April - middle June
Daid not here: until middle June ?
8) Samples CH2, CD2
Paul has new batch and should send alpha spectra soon. |
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16
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Sat Sep 9 09:39:38 2017 |
Claudia | Vacuum Readings at ISOLDE Hall | Thursday, 7th September:
Vaccum after pumping all night preamps off, chiller off
- 09:37: IMG1 2.3E-5 mbar, Chamber 7.5 E-5 mbar; Julabo off;
- 09:38: IMG1 2.1E-5 mbar; Chamber 6.6E-5 mbar; Julabo 20 Celsius
- 09:41: IMG1 2E-5; Chamber 6.6E-5; Julabo 5 Celsius
- 09:55: IMG1 1.3E-5; Chamber 1.3E-5
- 10:10 IMG1 1.2E-5; Chamber 4.5E-5;
Preamp power ON, Chiller on 5 Celsius
- 10:25 IMG1 1.3E-5; 5E-5; Thermocoupling Readout 16 Celsius
- 11:20 IMG1 1.5E-5; 6.1E-5 Thermocoupling Readount 19.3
- 13:08 IMG1 1.6E-5; 5.5E-5
- 14:16 IMG1 1.4E-5; 5.1E-5
- 15:40 IMG1 1.4E-5; 4.9E-5
- 17:55 IMG1 1.3E-5; 4.5E-5
Preamp OFF, chiller off
8th September
--> Leak test with He, replace target ladder with blank and refit feedtrhrough (upstream detectors), identify some scratches
start pumping
- 23:50 IMG1 2.2E-5; Chamber 9E-5
9th September
- 08:17 IMG1 1.3E-5; 5.1E-5 mbar
Leak test but no leaks found anywhere now.
Chiller on 5 Celsius, preamplifiers ON
- 10:55 IMG1 9.1E-6; 3.8E-5
- 12:00 IMG1 8.9E-6; 4.0E-5
- 14:50 IMG1 8.1E-6; 3.6E-5
Preamplifiers OFF
- 15:05 IMG1 6.3E-6; 2.9E-5 (9.8 C)
- 15:12 IMG1 6.1E-1; 2.9E-5 (9.3 C)
- 15:25 IMG1 5.9E-6; 2.8E-5 (9.0 C)
Chiller OFF (not sure when exactly chiller was turned off)
Sunday 10/09/2017
- 22:50 IMG1 8.8E-06; 3.4E-05
Monday 11/09/2017
- 9:20 IMG1 8.2E-06; 2.7E-05
Leak test on Cooling loop. --> Big leak detected. Open up chamber to replace cooling.
Tuesday 12/09/2017
Several tests done for cooling, it seems that even the smallest possible cooling loop is leaky.
- 19:00, close chamber and start pumping
- 19:13 start both turbo pumps at 9.9E-1 mbar
- 19:23 P=2.7E-4 mbar
Note that big Turbopump has been switched to normal start so pumping times not comparable with before. Maximum wattage of pump should be 420 W
Wednesday 13/09/2017
- 9:15 8.5E-6 mbar; 3.1E-5mbar
- 9:30 Cooling ON, switched to -10C
- 10:05 4.4E-6 mbar; 1.7E-5 bar (-9.9C on chiller)
- 10:15 preamps on, -10 C, 4.1E-6; 1.6E-5 mbar
- 10:22 T readout 5.6 C, 4.6E-6; 1.8E-5
- 10:26 T readount 6.2 C; 4.8E-6 mbar, 1.9E-5 mbar
- 10:40 4.9E-6 mbar; 1.9E-5 mbar
Preamps off, cooler off
open chamber for detector installation and some checks; close chamber and pump
- 18:55 7.2E-5; 3.3E-4 mbar
- 20:45 4.4E-5; 1.8E-4 mbar (nopreamp, no chiller)
Thursday, 14 September 2017
- 9:25 1.1E-5mbar; 4.3E-5 mbar
open chamber to discuss with beam operators
- 11:05 close chamber start pumping
- 11:20 1.2 mbar, turbo pumps on
- 11:32 4.1E-4 mbar; 1.1E-3 mbar
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18
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Thu Sep 14 08:37:27 2017 |
Claudia | Detector installation | dE detector: 2083-9, 74 um thick, V_depletion=12V; V_operating=24 V
E detector: 3080-23, 1012 um thick, V_d=110; V_o=350 V
HI detector: 2410-23, 65 um; V_d=7 ; V_o=14 V
Connect bias cables 14,15,16 (dE,E,HI)
Quad Bias Supply ports 1,2,3 (dE,E,HI). There seems to be some offset voltage on them (V1=3V, V2=7V, V3=1V, V4=4V) Seems to go dowon when preamps are on.
Leakage Currents
dE:
dE Leakage Currents
| Voltage |
Current (uA) |
| 7 |
0.15 |
| 11 |
0.22 |
| 16 |
0.31 |
| 21 |
0.39 |
| 24 |
0.44 |
E:
| Voltage |
Leakage Current (uA) |
| 15 |
0.28 |
| 20 |
0.37 |
| 30 |
0.49 |
| 40 |
0.60 |
| 50 |
0.72 |
| 60 |
0.82 |
| 81 |
1.04 |
| 100 |
1.2 |
| 122 |
1.4 |
| 140 |
1.55 |
| 160 |
1.7 |
| 180 |
1.82 |
| 202 |
1.96 |
| 225 |
2.06 |
| 250 |
2.18 |
| 275 |
2.29 |
| 300 |
2.39 |
| 326 |
2.47 |
| 340 |
2.52 |
| 350 |
2.55 |
HI:
| Voltage (V) |
Current (uA) |
| 3 |
0.21 |
| 6 |
0.46 |
| 8 |
0.61 |
| 10 |
0.72 |
| 12 |
0.87 |
| 14 |
1.02 |
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| Attachment 1: depletion.pdf
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| Attachment 2: profile.pdf
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| Attachment 3: resolution.pdf
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| Attachment 4: 3080-23.PDF
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| Attachment 5: depletion.pdf
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| Attachment 6: profile.pdf
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| Attachment 7: resolution.pdf
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| Attachment 8: S2_PINOUT.jpg
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20
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Thu Sep 14 10:24:34 2017 |
Claudia | Detector - ADC connection | ADC#1 0-31: p+n dE
ADC#2 32-48: n+n dE
ADC#2 49-64: p+n dE
ADC#3 0-31: p+n E
ADC#4 32-48: n+n E
ADC#4 49-64: p+n E
ADC#5 0-31: p+n HI
ADC#6 32-48: n+n HI
ADC#7 49-64: p+n HI |
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21
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Thu Sep 14 10:29:25 2017 |
Claudia | Alpha Calibration | Run 1-10 Test
14 September 2017
Run 11 Start 18:16 (CERN time)
Faults:
adc#2 7,8 missing segments (n+n side dE)
adc#3 19 low gain (p+n E)
some strips have no noise but maybe that is OK.
Run 12 Start 11:50
Pulse switched on halfway through
Run 13 Start 12:08
Pulser on
ADC spectra:
#1 ch0 bad resolution (also pulser)
#2 ch7 ch8: no alphas, pulser there
#3 ch0 low gain, ch24 low resolution
#4 ch 7 low gain only for alphas (not pulser)
TDC missing: ch 32,80,120,123
Not understood yet: 1mm detector has peak at ~1.5 MeV @ adc#3 ch20-30 (with ALL alpha events when visible , 24 looks very distorted); not visible in ADC#4 (n+n) no alpha in ADC#6 although segment. |
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25
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Thu Sep 21 14:54:00 2017 |
Claudia | Alpha Calibration Spectra | Alpha Calibration Runs (need to check settings in logbook)
0-63: dE detector and 32-47 is n+n; 64-127 E detector and 96-111 is n+n; 128-191 HI detector
Run 13: alpha source in fromt of dE detector (0-63). All detectors connected.
- 0-15 OK
- 16-31 OK
- 32-47 pulser appears at higher amplitude, alphas in a similar spot
- 48-63 OK
- 64-79 ch64 low gain but only for pulser (alphas look fine)
- 80-95 ch83 low gain, ch88 bad resolution. some strips show alphas
- 96-111 ch102 no alphas, ch103 low gain
- 112-127 pulser OK
- 128-191 (HI detector) looks ok
-
-
dE Layer is Removed
Run 15: alpha source in front of E detector, no dE
- 0-15 OFF
- 16-31 OFF
- 32-47 OFF
- 48-63 OFF
- 64-79 ch64 low gain but only for pulser (alphas look fine)
- 80-95 ch83 low gain, ch88 bad resolution.
- 96-111 ch102 no alphas, ch103 low gain
- 112-127 OK
Run 16: alpha source in front of E detector, no dE
- 0-15 OFF
- 16-31 OFF
- 32-47 OFF
- 48-63 OFF
- 64-79 ch64 low resolution, low gain but only for pulser
- 80-95 ch83 low gain, ch88 bad resolution.
- 96-111 ch102 /ch103 problem
- 112-127 OK
Run 18 does not seem to be in Run book
Run 18: alpha source in front of E detector,
- 0-15 OFF
- 16-31 OFF
- 32-47 OFF
- 48-63 OFF
- 64-79 ch64 as Run 16
- 80-95 ch83 as Run 16
- 96-111 alphas there but there are two pulser peaks in all segments, and a lot of alpha peaks...
- 112-127 OK
Run 19: same settings as Run 16
- 0-15 OFF
- 16-31 OFF
- 32-47 OFF
- 48-63 OFF
- 64-79 ch64 as Run 16
- 80-95 ch83 as Run 16
- 96-111 102/103 empty/low gain
- 128-143 OK
- 144-159 152-154 low resolution
- 160-175 OK
- 176-191 OK
For later runs the information is taken from logbook as no runs have been saved:
Run 23: E detector switched to #2951-22
- 0-15 OFF
- 16-31 OFF
- 32-47 OFF
- 48-63 OFF
- 64-79 ch64 as Run16
- 80-95 ch83 as Run 16
- 96-111 102/103 empty/low gain
- 112-127 OK
Run 24 Cable for 1 mm E detector must be faulty; Check new cable
- 64-79 OK
- 80-95 ch 83 low gain
- 96-111 ch 101, ch 103 low gain
- 112-127 OK
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| Attachment 1: Screenshot_from_2017-09-21_14-43-48.png
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| Attachment 2: Screenshot_from_2017-09-21_14-43-17.png
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30
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Thu Oct 5 11:34:34 2017 |
Claudia | Meeting 5.10.17 | POINTS FOR DISCUSSION
- Email sent to Karl and Olof about
- FC at end of SEC
- Gain resistor package
- Network access
- N2 gas
To ask still:
- date for connection of SEC to our chamber
- collimator in front of chamber ?
No reply, remind next week, best by phone
2) Parts to be prepared in Edinburgh
- -Iris under construction, add. stop so it does not close all the way. coming along nicely. might have to increase detector distance a bit for safety.
- spare feedthrough for cooling, to be done
- Al degrader: We have 15 um and 8 um in Edinburgh, Daid will check if light-tight. We dont have 8, but we have 10 and 6 um which should both be possible. We will prepare one 15, one 8 and on 6, possibly backups. Check what it would do for straggling if there is no hole in the middle of the foil. use 20 mm cookie cutter for circle. earth foils? Tom: Make hole, we have frames.
- Photo diodes x2 along with degrader foil: PCB for photodiodes. extra holes for ladder. coming along. 2 diodes need a bit less than 2 space, 10 spaces in total, maybe 11.
- Faraday cup SHV to SMA converter: Peter to order
- Window port for front of chamber? Peter to draw
- Extra ribbon cables are needed? Need short cables detector to preamp. Also need long ribbon cables. Peter will make 2 new ones
- Photographs and diagrams of experimental setup -- organized clearly for beam operators during tuning: add technical drawing on elog Peter will make it coherent. Safety Folder/Risk Assessment. Safety Datasheets (Ethanol).
- Alignment -- 2 end caps and one target ladder mount for optics reflector (8 mm diameter?) For survey people. Peter: two ends are done, drawings for S2 and target ladder mountain points not made yet.
- Adjustable feet to be produced for radial alignment: Peter / Toby
3)Decisions / Analysis
- Alpha analysis: dE and HI detectors seem ok, We need spare cables for Detector to preamplifier.
- Sort Routine: Tom will provide sort routine and test file to look at real data.
- Target ladder config finalization: 2 photodiodes, collimator (what size, we have 3 mm and 10mm), Beam viewer, 3 CH2 and 2 Carbon.
- Calibration of Target ladder positions. Peter / Daid
- CH2 and C sample choice. So far CH2 Target 1: 30+25 (480ug/cm2); CH2 Target 2: 16 (400 ug/cm2)
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31
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Thu Oct 12 12:45:54 2017 |
Claudia | Meeting 12.10.17 | Email sent to Karl and Olof about
- FC at end of SEC
- Gain resistor package
- Network access
- N2 gas
- date for connection of SEC to our chamber
- collimator in front of chamber ?
Next week call Karl. Daid will look at old Olof emails
2) Parts to be prepared in Edinburgh
- - Iris under construction, add. stop so it does not close all the way. coming along nicely. might have to increase detector distance a bit for safety. no news
- spare feedthrough for cooling, to be done
- Al degrader: We have 15 um and 6&10 um in Edinburgh, Daid will check if light-tight. We will prepare one 15, one 10 and on 6, possibly backups. Make hole, we have frames. more frames
- Photo diodes x2 along with degrader foil: PCB & photodiodes here. extra holes for ladder. coming along. 2 diodes need a bit less than 2 space, 10 spaces in total, maybe 11. drawings there. Preamps, amps? ask Tom
- Faraday cup SHV to SMA converter: Peter on order
- Window port for front of chamber? Peter to manufacture
- Extra ribbon cables are needed? need to check with calibration. Also need long ribbon cables. Peter will make 2 new ones. Peter has bits
- Photographs and diagrams of experimental setup -- organized clearly for beam operators during tuning: add technical drawing on elog Peter will make it coherent. Safety Folder/Risk Assessment. Safety Datasheets (Ethanol). send to Karl
- Alignment -- 2 end caps and one target ladder mount for optics reflector (8 mm diameter?) For survey people. Peter: two ends are done, drawings for S2 and target ladder mountain points not made yet.
- Adjustable feet to be produced for radial alignment: Peter / Toby
3)Decisions / Analysis
- Alpha analysis: dE and HI detectors seem ok, We need spare cables for Detector to preamplifier.
- Sort Routine — ask Tom
- Target ladder config finalization: 2 photodiodes, collimator (what size, we have 3 mm and 10mm), Beam viewer, We need to verify how many positions we have. 3 CH2 and 2 Carbon.
- Calibration of Target ladder positions. Peter / Daid
- CH2 and C sample choice. So far CH2 Target 1: 30+25 (480ug/cm2); CH2 Target 2: 16 (400 ug/cm2). Check combination 33+1+10. New Ch2 from Paul —> Check thickness asap!
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32
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Thu Oct 19 10:55:54 2017 |
Claudia | Meeting 19.10. | CERN-Edinburgh Liaison
- FC at end of SEC: manual
- Network access: port free.
- N2 gas ?
- -date for connection of SEC to our chamber: week 30. October, 2nd November alignment.
- collimator in front of chamber ?? contact Jorge Alberto about beam tuning in general (maybe add contingency high energy point) ? cc Karl
look for 4 deliveries: 2 bags gain resistors, 1 box luvac, 1 box farnell
2) Parts to be prepared in Edinburgh
- Iris: no news should be done today
- spare feedthrough for cooling, to be done.
- Al degrader: we have 2x10, 2x15 um (hole in center and light checked). 6 um still to prepare, 20 um maybe. mounts to be delivered.
- Photo diodes x2 along with degrader foil: PCB & photodiodes here. extra holes for ladder. drawings there. making degrader foil holder. target ladder remade. Preamps, amps? ask Tom. Cocknell preamp tested. 20 mv/MeV (250 MeV max). maybe borrow some more amps from miniball.
- Faraday cup SHV to SMA converter: needs to be glued together
- Window port for front of chamber? Peter to manufacture
- Extra ribbon cables are needed? need to check with calibration. Also need long ribbon cables. will be done today/tomorrow
- Photographs and diagrams of experimental setup -- organized clearly for beam operators during tuning: add technical drawing on elog Peter will make it coherent. Safety Folder/Risk Assessment. Safety Datasheets (Ethanol).
- Alignment -- 2 end caps and one target ladder mount for optics reflector (8 mm diameter?) For survey people. Peter: two ends are done, drawings for S2 and target ladder mount points are at workshop
- Adjustable feet to be produced for radial alignment: Toby, almost done
- degrading of 12C - on elog.
3)Decisions / Analysis
- Alpha analysis: dE and HI detectors seem ok, We need spare cables for Detector to preamplifier.
- Sort Routine — Ruchi +Alex+Tom
- Target ladder config finalization: 2 photodiodes, collimator (what size, we have 3 mm and 10mm), Beam viewer, 3 CH2 and 2 Carbon.
- Calibration of Target ladder positions. Peter / Daid
- CH2 and C sample choice. So far CH2 Target 1: 30+25 (480ug/cm2); CH2 Target 2: 16 (400 ug/cm2). Check combination 33+1+10. New Ch2 from Paul - all will be sent here
4) CERN Presence:
- Ruchi: 22 Oct - ~20 Nov
- Mirco: 22-27 Oct, 5- ~20 Nov ?
- Claudia: 22-27 Oct, 5- ~20 Nov
- Daid: from 30 Oct
- Peter: from ~1 Nov
- Toby: from 30 Oct
- Alex 6-11 Nov
- Tom 8- ?? Nov
Sarah: 8 - ?? Nov
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62
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Thu Nov 9 08:20:21 2017 |
Claudia | Restarting Target Current & Line Current | 0) If target or line drop, STOP THE BEAM!!
1) If you SEE target or line current go down (top right window of monitors next to the corridor):
Use Knobs open application (monitor below); remember set value; type 0 in set window; click Mode - Reset; click Mode - On. increase current in steps of 100 A
2) If Target or line current off and it happened a while ago
Use Knobs open application (monitor below); type 0 in set window; click Mode - Reset; click Mode - On Use Isolde Target heating GPs application (in monitor below); |
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87
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Fri Nov 10 16:32:19 2017 |
Claudia | RAL Amplitude Thresholds | Thresholds of RAL amplifiers set to: dE 30mV; E 20 mV, HI 20 mV |
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100
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Sat Nov 11 07:45:34 2017 |
Claudia | Checking Laser quality | There is an option to see when the beam is gone if it is due to lasers or due to the accelerator.
- window next to proton requestion switch
- put middle faraday cup in
- switch mass to stable copper 63Cu
- check faraday cup current. should be around 1-3 nA
- switch back to 59Cu
-Faraday Cup out
- further descption is on a piece of paper upstairs |
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